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Imam MZ, Ghassabian S, Kuo A, Cai Y, Qin Y, Li T, Smith MT. In Vitro Assessment of the Metabolic Stability of Two Novel Endomorphin-2 Analogs, CYX-5 and CYX-6, in Rat Liver Microsomes. Eur J Drug Metab Pharmacokinet 2023; 48:463-466. [PMID: 37171777 DOI: 10.1007/s13318-023-00828-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/16/2023] [Indexed: 05/13/2023]
Affiliation(s)
- Mohammad Zafar Imam
- School of Biomedical Sciences, The University of Queensland, St Lucia Campus, Brisbane, QLD, 4072, Australia
| | - Sussan Ghassabian
- School of Biomedical Sciences, The University of Queensland, St Lucia Campus, Brisbane, QLD, 4072, Australia
| | - Andy Kuo
- School of Biomedical Sciences, The University of Queensland, St Lucia Campus, Brisbane, QLD, 4072, Australia
| | - Yunxin Cai
- School of Pharmacy, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yajuan Qin
- School of Pharmacy, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Tingyou Li
- School of Pharmacy, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Maree T Smith
- School of Biomedical Sciences, The University of Queensland, St Lucia Campus, Brisbane, QLD, 4072, Australia.
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2
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The Therapeutic Potential of Naturally Occurring Peptides in Counteracting SH-SY5Y Cells Injury. Int J Mol Sci 2022; 23:ijms231911778. [PMID: 36233079 PMCID: PMC9569762 DOI: 10.3390/ijms231911778] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 09/23/2022] [Accepted: 09/26/2022] [Indexed: 11/17/2022] Open
Abstract
Peptides have revealed a large range of biological activities with high selectivity and efficiency for the development of new drugs, including neuroprotective agents. Therefore, this work investigates the neuroprotective properties of naturally occurring peptides, endomorphin-1 (EM-1), endomorphin-2 (EM-2), rubiscolin-5 (R-5), and rubiscolin-6 (R-6). We aimed at answering the question of whether well-known opioid peptides can counteract cell injury in a common in vitro model of Parkinson’s disease (PD). Antioxidant activity of these four peptides was evaluated by the 2-diphenyl-1-picrylhydrazyl radical (DPPH) scavenging activity, oxygen radical absorbance capacity (ORAC), and ferric-reducing antioxidant power (FRAP) assays, while neuroprotective effects were assessed in a neurotoxic model induced by 6-hydroxydopamine (6-OHDA) in a human neuroblastoma cell line (SH-SY5Y). The mechanisms associated with neuroprotection were investigated by the determination of mitochondrial membrane potential (MMP), reactive oxygen species (ROS) production, and Caspase-3 activity. Among the tested peptides, endomorphins significantly prevented neuronal death induced by 6-OHDA treatment, decreasing MMP (EM-1) or Caspase-3 activity (EM-2). Meanwhile, R-6 showed antioxidant potential by FRAP assay and exhibited the highest capacity to recover the neurotoxicity induced by 6-OHDA via attenuation of ROS levels and mitochondrial dysfunction. Generally, we hypothesize that peptides’ ability to suppress the toxic effect induced by 6-OHDA may be mediated by different cellular mechanisms. The protective effect caused by endomorphins results in an antiapoptotic effect (mitochondrial protection and decrease in Caspase-3 activity), while R-6 potency to increase a cell’s viability seems to be mediated by reducing oxidative stress. Our results may provide new insight into neurodegeneration and support the short peptides as a potent drug candidate to treat PD. However, further studies should be conducted on the detailed mechanisms of how tested peptides could suppress neuronal injuries.
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Lee YS. Peptidomimetics and Their Applications for Opioid Peptide Drug Discovery. Biomolecules 2022; 12:biom12091241. [PMID: 36139079 PMCID: PMC9496382 DOI: 10.3390/biom12091241] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 08/29/2022] [Accepted: 09/02/2022] [Indexed: 11/16/2022] Open
Abstract
Despite various advantages, opioid peptides have been limited in their therapeutic uses due to the main drawbacks in metabolic stability, blood-brain barrier permeability, and bioavailability. Therefore, extensive studies have focused on overcoming the problems and optimizing the therapeutic potential. Currently, numerous peptide-based drugs are being marketed thanks to new synthetic strategies for optimizing metabolism and alternative routes of administration. This tutorial review briefly introduces the history and role of natural opioid peptides and highlights the key findings on their structure-activity relationships for the opioid receptors. It discusses details on opioid peptidomimetics applied to develop therapeutic candidates for the treatment of pain from the pharmacological and structural points of view. The main focus is the current status of various mimetic tools and the successful applications summarized in tables and figures.
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Affiliation(s)
- Yeon Sun Lee
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724, USA
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4
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β 2- Homo-Amino Acid Scan of µ-Selective Opioid Tetrapeptide TAPP. Molecules 2020; 25:molecules25102461. [PMID: 32466333 PMCID: PMC7288052 DOI: 10.3390/molecules25102461] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 05/12/2020] [Accepted: 05/22/2020] [Indexed: 01/12/2023] Open
Abstract
TAPP (H-Tyr-d-Ala-Phe-Phe-NH2) is a potent, µ-selective opioid ligand. In order to gain further insights into pharmacophoric features of this tetrapeptide, we have performed a β2-Homo-amino acid (β2hAA) scan of the TAPP sequence. To this aim, 10 novel analogues have been synthesized and evaluated for µ-opioid and δ-opioid receptor affinity as well as for stability in human plasma. The derivatives included compounds in which a (R)- or (S)-β2-Homo-Homologue replaced the amino acids in the TAPP sequence. The derivatives with (R)- or (S)-β2hPhe4 turned out to bind µOR with affinities equal to that of the parent. β2hAAs in position 1 and 3 resulted in rather large affinity decreases, but the change differed depending on the stereochemistry. β2-Homologation in the second position gave derivatives with very poor µOR binding. According to molecular modelling, the presented α/β-peptides adopt a variety of binding poses with their common element being an ionic interaction between a protonable amine of the first residue and Asp147. A feature required for high µOR affinity seems the ability to accommodate the ring in the fourth residue in a manner similar to that found for TAPP. Contrary to what might be expected, several compounds were significantly less stable in human plasma than the parent compound.
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Zhao L, Luo K, Wang Z, Wang Y, Zhang X, Yang D, Ma M, Zhou J, Cui J, Wang J, Han CZY, Liu X, Wang R. Design, synthesis, and biological activity of new endomorphin analogs with multi-site modifications. Bioorg Med Chem 2020; 28:115438. [PMID: 32199689 DOI: 10.1016/j.bmc.2020.115438] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 03/04/2020] [Accepted: 03/10/2020] [Indexed: 12/18/2022]
Abstract
Endomorphin (EM)-1 and EM-2 are the most effective endogenous analgesics with efficient separation of analgesia from the risk of adverse effects. Poor metabolic stability and ineffective analgesia after peripheral administration were detrimental for the use of EMs as novel clinical analgesics. Therefore, here, we aimed to establish new EM analogs via introducing different bifunctional d-amino acids at position 2 of [(2-furyl)Map4]EMs. The combination of [(2-furyl)Map4]EMs with D-Arg2 or D-Cit2 yielded analogs with enhanced binding affinity to the μ-opioid receptor (MOR) and increased stability against enzymatic degradation (t1/2 > 300 min). However, the agonistic activities of these analogs toward MOR were slightly reduced. Similar to morphine, peripheral administration of the analog [D-Cit2, (2-furyl)Map4]EM-1 (10) significantly inhibited the pain behavior of mice in multiple pain models. In addition, this EM-1 analog was associated with reduced tolerance, less effect on gastrointestinal mobility, and no significant motor impairment. Compared to natural EMs, the EM analogs synthesized herein had enhanced metabolic stability, bioavailability, and analgesic properties.
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Affiliation(s)
- Long Zhao
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Biochemistry and Molecular Biology, Department of Pharmacology, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, PR China
| | - Keyao Luo
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Biochemistry and Molecular Biology, Department of Pharmacology, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, PR China
| | - Zhaojuan Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Biochemistry and Molecular Biology, Department of Pharmacology, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, PR China
| | - Yuan Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Biochemistry and Molecular Biology, Department of Pharmacology, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, PR China.
| | - Xianghui Zhang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Biochemistry and Molecular Biology, Department of Pharmacology, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, PR China
| | - Dongxu Yang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Biochemistry and Molecular Biology, Department of Pharmacology, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, PR China
| | - Mengtao Ma
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Biochemistry and Molecular Biology, Department of Pharmacology, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, PR China
| | - Jingjing Zhou
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Biochemistry and Molecular Biology, Department of Pharmacology, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, PR China
| | - Jiaming Cui
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Biochemistry and Molecular Biology, Department of Pharmacology, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, PR China
| | - Jing Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Biochemistry and Molecular Biology, Department of Pharmacology, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, PR China
| | - Chao-Zhen-Yi Han
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Biochemistry and Molecular Biology, Department of Pharmacology, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, PR China
| | - Xin Liu
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Biochemistry and Molecular Biology, Department of Pharmacology, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, PR China.
| | - Rui Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Biochemistry and Molecular Biology, Department of Pharmacology, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, PR China.
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6
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Wtorek K, Adamska-Bartłomiejczyk A, Piekielna-Ciesielska J, Ferrari F, Ruzza C, Kluczyk A, Piasecka-Zelga J, Calo’ G, Janecka A. Synthesis and Pharmacological Evaluation of Hybrids Targeting Opioid and Neurokinin Receptors. Molecules 2019; 24:molecules24244460. [PMID: 31817441 PMCID: PMC6943619 DOI: 10.3390/molecules24244460] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 11/28/2019] [Accepted: 12/02/2019] [Indexed: 11/16/2022] Open
Abstract
Morphine, which acts through opioid receptors, is one of the most efficient analgesics for the alleviation of severe pain. However, its usefulness is limited by serious side effects, including analgesic tolerance, constipation, and dependence liability. The growing awareness that multifunctional ligands which simultaneously activate two or more targets may produce a more desirable drug profile than selectively targeted compounds has created an opportunity for a new approach to developing more effective medications. Here, in order to better understand the role of the neurokinin system in opioid-induced antinociception, we report the synthesis, structure–activity relationship, and pharmacological characterization of a series of hybrids combining opioid pharmacophores with either substance P (SP) fragments or neurokinin receptor (NK1) antagonist fragments. On the bases of the in vitro biological activities of the hybrids, two analogs, opioid agonist/NK1 antagonist Tyr-[d-Lys-Phe-Phe-Asp]-Asn-d-Trp-Phe-d-Trp-Leu-Nle-NH2 (2) and opioid agonist/NK1 agonist Tyr-[d-Lys-Phe-Phe-Asp]-Gln-Phe-Phe-Gly-Leu-Met-NH2 (4), were selected for in vivo tests. In the writhing test, both hybrids showed significant an antinociceptive effect in mice, while neither of them triggered the development of tolerance, nor did they produce constipation. No statistically significant differences in in vivo activity profiles were observed between opioid/NK1 agonist and opioid/NK1 antagonist hybrids.
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Affiliation(s)
- Karol Wtorek
- Department of Biomolecular Chemistry, Medical University of Lodz, Mazowiecka 6/8, 92-215 Lodz, Poland; (K.W.); (A.A.-B.); (J.P.-C.)
| | - Anna Adamska-Bartłomiejczyk
- Department of Biomolecular Chemistry, Medical University of Lodz, Mazowiecka 6/8, 92-215 Lodz, Poland; (K.W.); (A.A.-B.); (J.P.-C.)
| | - Justyna Piekielna-Ciesielska
- Department of Biomolecular Chemistry, Medical University of Lodz, Mazowiecka 6/8, 92-215 Lodz, Poland; (K.W.); (A.A.-B.); (J.P.-C.)
| | - Federica Ferrari
- Department of Medical Sciences, Section of Pharmacology, University of Ferrara, 44121 Ferrara, Italy; (F.F.); (C.R.); (G.C.)
| | - Chiara Ruzza
- Department of Medical Sciences, Section of Pharmacology, University of Ferrara, 44121 Ferrara, Italy; (F.F.); (C.R.); (G.C.)
| | - Alicja Kluczyk
- Faculty of Chemistry, University of Wroclaw, 50-383 Wroclaw, Poland;
| | - Joanna Piasecka-Zelga
- Institute of Occupational Medicine, Research Laboratory for Medicine and Veterinary Products in the GMP Head of Research Laboratory for Medicine and Veterinary Products, 91-348 Lodz, Poland;
| | - Girolamo Calo’
- Department of Medical Sciences, Section of Pharmacology, University of Ferrara, 44121 Ferrara, Italy; (F.F.); (C.R.); (G.C.)
| | - Anna Janecka
- Department of Biomolecular Chemistry, Medical University of Lodz, Mazowiecka 6/8, 92-215 Lodz, Poland; (K.W.); (A.A.-B.); (J.P.-C.)
- Correspondence:
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7
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Wtorek K, Artali R, Piekielna-Ciesielska J, Koszuk J, Kluczyk A, Gentilucci L, Janecka A. Endomorphin-2 analogs containing modified tyrosines: Biological and theoretical investigation of the influence on conformation and pharmacological profile. Eur J Med Chem 2019; 179:527-536. [PMID: 31276897 DOI: 10.1016/j.ejmech.2019.06.077] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 06/26/2019] [Accepted: 06/27/2019] [Indexed: 11/16/2022]
Abstract
New analogs of the endogenous opioid agonist endomorphin-2 (EM-2, H-Tyr-Pro-Phe-Phe-NH2) have been obtained by introducing modified tyrosines at the position 1 of the sequence. For all analogs, the cis/trans conformation ratio about the tyramine-Pro amide bond, lipophilicity, receptor affinities, and functional activities, have been determined. Among the novel derivatives, [Dmt(3'-Cl)]1EM-2 (4) stood out for its subnanomolar μ-opioid receptor affinity and potent agonist activity, superior to that of the parent peptide EM-2. Hybrid quantum mechanics/molecular mechanics docking computations supported the cis tyramine-Pro bioactive conformation, and allowed us to analyze the contribution of the substituents of the "message" tyramine to binding, highlighting the role of halogen-bonding in the higher receptor affinity of peptide 4.
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Affiliation(s)
- Karol Wtorek
- Department of Biomolecular Chemistry, Medical University of Lodz, Mazowiecka 6/8, 92-215, Lodz, Poland
| | - Roberto Artali
- Scientia Advice, di Roberto Artali, 20832, Desio, Monza and Brianza, Italy
| | | | - Jacek Koszuk
- Institute of Organic Chemistry, Lodz University of Technology, Lodz, Poland
| | - Alicja Kluczyk
- Faculty of Chemistry, University of Wroclaw, Wroclaw, Poland
| | - Luca Gentilucci
- Department of Chemistry, University of Bologna, Via Selmi 2, 40126, Bologna, Italy.
| | - Anna Janecka
- Department of Biomolecular Chemistry, Medical University of Lodz, Mazowiecka 6/8, 92-215, Lodz, Poland.
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8
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Li Y, Cazares M, Wu J, Houghten RA, Toll L, Dooley C. Potent μ-Opioid Receptor Agonists from Cyclic Peptides Tyr-c[D-Lys-Xxx-Tyr-Gly]: Synthesis, Biological, and Structural Evaluation. J Med Chem 2016; 59:1239-45. [PMID: 26789491 DOI: 10.1021/acs.jmedchem.5b01899] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
To optimize the structure of a μ-opioid receptor ligand, analogs H-Tyr-c[D-Lys-Xxx-Tyr-Gly] were synthesized and their biological activity was tested. The analog containing a Phe(3) was identified as not only exhibiting binding affinity 14-fold higher than the original hit but also producing agonist activity 3-fold more potent than morphine. NMR study suggested that a trans conformation at D-Lys(2)-Xxx(3) is crucial for these cyclic peptides to maintain high affinity, selectivity, and functional activity toward the μ-opioid receptor.
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Affiliation(s)
- Yangmei Li
- Torrey Pines Institute for Molecular Studies , 11350 SW Village Parkway, Port St. Lucie, Florida 34987, United States
| | - Margret Cazares
- Torrey Pines Institute for Molecular Studies , 11350 SW Village Parkway, Port St. Lucie, Florida 34987, United States
| | - Jinhua Wu
- Torrey Pines Institute for Molecular Studies , 11350 SW Village Parkway, Port St. Lucie, Florida 34987, United States
| | - Richard A Houghten
- Torrey Pines Institute for Molecular Studies , 11350 SW Village Parkway, Port St. Lucie, Florida 34987, United States
| | - Laurence Toll
- Torrey Pines Institute for Molecular Studies , 11350 SW Village Parkway, Port St. Lucie, Florida 34987, United States
| | - Colette Dooley
- Torrey Pines Institute for Molecular Studies , 11350 SW Village Parkway, Port St. Lucie, Florida 34987, United States
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9
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Synthesis and biological evaluations of novel endomorphin analogues containing α-hydroxy-β-phenylalanine (AHPBA) displaying mixed μ/δ opioid receptor agonist and δ opioid receptor antagonist activities. Eur J Med Chem 2015; 92:270-81. [DOI: 10.1016/j.ejmech.2014.12.049] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2014] [Accepted: 12/28/2014] [Indexed: 12/29/2022]
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10
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Rational Approach to the Design of Bioactive Peptidomimetics: Recent Developments in Opioid Agonist Peptides. STUDIES IN NATURAL PRODUCTS CHEMISTRY 2015. [DOI: 10.1016/b978-0-444-63462-7.00002-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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11
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Eskandari S, Varamini P, Toth I. Formulation, characterization and permeability study of nano particles of lipo-endomorphin-1 for oral delivery. J Liposome Res 2013; 23:311-7. [DOI: 10.3109/08982104.2013.805339] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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12
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Kovács G, Petrovszki Z, Mallareddy J, Tóth G, Benedek G, Horváth G. Characterization of antinociceptive potency of endomorphin-2 derivatives with unnatural amino acids in rats. ACTA ACUST UNITED AC 2012; 99:353-63. [DOI: 10.1556/aphysiol.99.2012.3.12] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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13
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Smoum R, Rubinstein A, Dembitsky VM, Srebnik M. Boron containing compounds as protease inhibitors. Chem Rev 2012; 112:4156-220. [PMID: 22519511 DOI: 10.1021/cr608202m] [Citation(s) in RCA: 298] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Reem Smoum
- The School of Pharmacy, Institute for Drug Research, The Hebrew University of Jerusalem, Faculty of Medicine, Jerusalem, Israel.
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Abstract
This paper is the thirty-third consecutive installment of the annual review of research concerning the endogenous opioid system. It summarizes papers published during 2010 that studied the behavioral effects of molecular, pharmacological and genetic manipulation of opioid peptides, opioid receptors, opioid agonists and opioid antagonists. The particular topics that continue to be covered include the molecular-biochemical effects and neurochemical localization studies of endogenous opioids and their receptors related to behavior (Section 2), and the roles of these opioid peptides and receptors in pain and analgesia (Section 3); stress and social status (Section 4); tolerance and dependence (Section 5); learning and memory (Section 6); eating and drinking (Section 7); alcohol and drugs of abuse (Section 8); sexual activity and hormones, pregnancy, development and endocrinology (Section 9); mental illness and mood (Section 10); seizures and neurologic disorders (Section 11); electrical-related activity and neurophysiology (Section 12); general activity and locomotion (Section 13); gastrointestinal, renal and hepatic functions (Section 14); cardiovascular responses (Section 15); respiration (Section 16); and immunological responses (Section 17).
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Affiliation(s)
- Richard J Bodnar
- Department of Psychology and Neuropsychology Doctoral Sub-Program, Queens College, City University of New York, Flushing, NY 11367, USA.
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15
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Vandormael B, Fourla DD, Gramowski-Voss A, Kosson P, Weiss DG, Schröder OHU, Lipkowski A, Georgoussi Z, Tourwé D. Superpotent [Dmt¹] dermorphin tetrapeptides containing the 4-aminotetrahydro-2-benzazepin-3-one scaffold with mixed μ/δ opioid receptor agonistic properties. J Med Chem 2011; 54:7848-59. [PMID: 21978284 DOI: 10.1021/jm200894e] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Novel dermorphin tetrapeptides are described in which Tyr(1) is replaced by Dmt(1), where d-Ala(2) and Gly(4) are N-methylated, and where Phe(3)-Gly(4) residue is substituted by the constrained Aba(3)-Gly(4) peptidomimetic. Most of these peptidic ligands displayed binding affinities in the nanomolar range for both μ- and δ-opioid receptors but no detectable affinity for the κ-opioid receptor. Measurements of cAMP accumulation, phosphorylation of extracellular signal-regulated kinase (ERK1/2) in HEK293 cells stably expressing each of these receptors individually, and functional screening in primary neuronal cultures confirmed the potent agonistic properties of these peptides. The most potent ligand H-Dmt-NMe-d-Ala-Aba-Gly-NH(2) (BVD03) displayed mixed μ/δ opioid agonist properties with picomolar functional potencies. Functional electrophysiological in vitro assays using primary cortical and spinal cord networks showed that this analogue possessed electrophysiological similarity toward gabapentin and sufentanil, which makes it an interesting candidate for further study as an analgesic for neuropathic pain.
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Affiliation(s)
- Bart Vandormael
- Department of Organic Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium
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16
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Liu WX, Wang R. Endomorphins: potential roles and therapeutic indications in the development of opioid peptide analgesic drugs. Med Res Rev 2011; 32:536-80. [DOI: 10.1002/med.20222] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
| | - Rui Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province; School of Basic Medical Sciences; Institute of Biochemistry and Molecular Biology; State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Lanzhou China
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